Nitrogen oxides and sulfur oxides removal utilizing transport line absorber

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EP 0 657 203 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	29.11.1995 Bulletin 1995/48

(43)	Date of publication A2:
	14.06.1995 Bulletin 1995/24

(21)	Application number: 94118446.7

(22)	Date of filing: 24.11.1994

(51)	International Patent Classification (IPC)⁶: B01D 53/08, B01D 53/60

(84)	Designated Contracting States:
	BE DE DK ES GB IT SE

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Priority:

13.12.1993 US 166203

(71)	Applicant: NOXSO CORPORATION
	Library, PA 15129 (US)

(72)	Inventors:
	Neal, Lewis G. Bethel Park, PA15102 (US) Ma, Warren Pittsburgh, Pennsylv. 15241 (US) Chang, Min-Yan Bethel Park, PA12102 (US) Zhou, Qian Munster, Indiana 46321 (US) Pereira, Carmo Joseph Silver Spring Maryland 20906 (US) Plumlee, Karl Warren Elliot City, Maryland 21042 (US) Beeckman, Jean Willem Columbia, Maryland 21044 (US)

(74)	Representative: Lohrentz, Franz, Dipl.-Ing.
	Ferdinand-Maria-Strasse 12 D-82319 Starnberg D-82319 Starnberg (DE)

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References cited: :

(54)	Nitrogen oxides and sulfur oxides removal utilizing transport line absorber

(57) Removal of NOx and SOx from flue gas utilizing a transport line adsorber (102) through which sorbent is transported by pressurized flue gas to cause the sorbent to adsorb NOx and SOx from the flue gas while the flue gas is transporting the sorbent through the transport line adsorber. A plurality of interconnected cyclones (120) is utilized to contact sorbent saturated with NOx and SOx removed from the flue gas with a heated gas to heat the sorbent and remove the NOx from the sorbent and separate the sorbent and the heated gas to produce an off stream of heated gas carrying the removed NOx away; the heated gas and gravity combine to pass the sorbent through the plurality of cyclones and which cyclones are positioned vertically and successively downwardly with respect to each other. A plurality of interconnected cyclones (150) is also utilized to contact heated sorbent having the NOx and SOx removed therefrom with a cooling gas to cool the sorbent and separate the sorbent from the cooling gas to produce cooled regenerated sorbent for recycling and repeating of the NOx and SOx flue gas removal.
Also a sorbent particle stream splitter (174) is mounted upstream of the first plurality of interconnected cyclones (120) to return a portion of the sorbent particles having said oxides adsorbed thereon to the bottom input portion of the transport line adsorber (102).

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